This document describes configuring a development environment for modern C++. Some of the flags and warnings in this document are not common knowledge, or found in the documentation of the respective toolchain.
Below is the compiler configuration we'll use
| #include <iostream> | |
| // clang-format off | |
| #include <gcc-plugin.h> | |
| #include <context.h> | |
| #include <plugin-version.h> | |
| #include <tree.h> | |
| #include <gimple.h> | |
| #include <tree-pass.h> | |
| #include <gimple-iterator.h> |
| #include <iostream> | |
| // clang-format off | |
| #include <gcc-plugin.h> | |
| #include <context.h> | |
| #include <plugin-version.h> | |
| #include <tree.h> | |
| #include <gimple.h> | |
| #include <tree-pass.h> | |
| #include <gimple-iterator.h> |
| digraph state_machine { | |
| rankdir=LR; | |
| size="8,5" | |
| node [shape = doublecircle, style=filled, fillcolor=lightblue]; WaitingForQuery; | |
| node [shape = doublecircle, style=filled, fillcolor=maroon] GotErrorResponseDuringSimpleQuery; | |
| node [shape = circle, style=filled, fillcolor=lightgrey]; | |
| InitializingBackend -> GotCommandComplete [ label = "PG3ReadyForQuery", color=green ]; | |
| InitializingBackend -> InitializingBackend [ label = "PG3BackendKeyData", color=orange ]; | |
| GotDataRow -> GotErrorResponseDuringSimpleQuery [ label = "PG3ErrorResponse", color=red ]; | |
| GotDataRow -> GotCommandComplete [ label = "PG3CommandComplete", color=green ]; |
| { | |
| "AuthenticationOk": { | |
| "type": "backend", | |
| "fields": [ | |
| { | |
| "name": "Byte1('R')", | |
| "type": "Byte1", | |
| "description": "Identifies the message as an authentication request.", | |
| "value": "'R'" | |
| }, |
| // Regex for lines like "Terminate (F)" | |
| // Where the first group is the name of the message and the second is the kind (Backend/Frontend) | |
| const pgMessageTypeRegex = /^(?<command>\w+) \((?<kind>\w)\)$/gm | |
| // Regex for the type of a variable, like: | |
| // - Int16, Int32, Byten, Byte4, String | |
| // - Byte1('S') | |
| // - Int32(4) | |
| // - Int16[N] | |
| // Where: |
| import fs from "node:fs" | |
| const postgresWireProtocolDocs = ` | |
| AuthenticationOk (B) | |
| Byte1('R') | |
| Identifies the message as an authentication request. | |
| Int32(8) | |
| Length of message contents in bytes, including self. |
| // Generated by blah blah blah | |
| public class PostgresTypes { | |
| public static class Backend { | |
| public static class AuthenticationOk { | |
| /** Identifies the message as an authentication request. */ | |
| byte field1_Byte1 = 'R'; | |
| /** Length of message contents in bytes, including self. */ | |
| int field2_Int32 = 8; |
| #include <atomic> | |
| #include <cassert> | |
| #include <cstdint> | |
| #include <cstdio> | |
| #include <optional> | |
| // A word-aligned, atomic tagged pointer. | |
| // Uses both the upper 16 bits for storage, and the lower 3 bits for tagging. | |
| // | |
| // 64 48 32 16 |
| # Info from: https://discourse.haskell.org/t/pre-hftp-ghc-nightly-releases/5094/5 | |
| $ URL='https://gitlab.haskell.org/ghc/ghc/-/jobs/artifacts/master/raw/ghc-x86_64-linux-fedora33-release.tar.xz?job=x86_64-linux-fedora33-release' | |
| $ ghcup install ghc -u $URL head |